projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * 32bit -> 64bit ioctl wrapper for hwdep API | |
| 3 | * Copyright (c) by Takashi Iwai <[email protected]> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | * | |
| 19 | */ | |
| 20 | ||
| 21 | /* This file is included from hwdep.c */ | |
| 22 | ||
| 23 | #include <linux/compat.h> | |
| 24 | ||
| d9a98de2 | 25 | struct snd_hwdep_dsp_image32 { |
| 1da177e4 LT |
26 | u32 index; |
| 27 | unsigned char name[64]; | |
| 28 | u32 image; /* pointer */ | |
| 29 | u32 length; | |
| 30 | u32 driver_data; | |
| 31 | } /* don't set packed attribute here */; | |
| 32 | ||
| d9a98de2 TI |
33 | static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw, |
| 34 | struct snd_hwdep_dsp_image32 __user *src) | |
| 1da177e4 | 35 | { |
| cb04e6b6 | 36 | struct snd_hwdep_dsp_image __user *dst; |
| 1da177e4 LT |
37 | compat_caddr_t ptr; |
| 38 | u32 val; | |
| 39 | ||
| 40 | dst = compat_alloc_user_space(sizeof(*dst)); | |
| 41 | ||
| 42 | /* index and name */ | |
| 43 | if (copy_in_user(dst, src, 4 + 64)) | |
| 44 | return -EFAULT; | |
| 45 | if (get_user(ptr, &src->image) || | |
| 46 | put_user(compat_ptr(ptr), &dst->image)) | |
| 47 | return -EFAULT; | |
| 48 | if (get_user(val, &src->length) || | |
| 49 | put_user(val, &dst->length)) | |
| 50 | return -EFAULT; | |
| 51 | if (get_user(val, &src->driver_data) || | |
| 52 | put_user(val, &dst->driver_data)) | |
| 53 | return -EFAULT; | |
| 54 | ||
| 55 | return snd_hwdep_dsp_load(hw, dst); | |
| 56 | } | |
| 57 | ||
| 58 | enum { | |
| d9a98de2 | 59 | SNDRV_HWDEP_IOCTL_DSP_LOAD32 = _IOW('H', 0x03, struct snd_hwdep_dsp_image32) |
| 1da177e4 LT |
60 | }; |
| 61 | ||
| d9a98de2 TI |
62 | static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd, |
| 63 | unsigned long arg) | |
| 1da177e4 | 64 | { |
| d9a98de2 | 65 | struct snd_hwdep *hw = file->private_data; |
| 1da177e4 LT |
66 | void __user *argp = compat_ptr(arg); |
| 67 | switch (cmd) { | |
| 68 | case SNDRV_HWDEP_IOCTL_PVERSION: | |
| 69 | case SNDRV_HWDEP_IOCTL_INFO: | |
| 70 | case SNDRV_HWDEP_IOCTL_DSP_STATUS: | |
| 71 | return snd_hwdep_ioctl(file, cmd, (unsigned long)argp); | |
| 72 | case SNDRV_HWDEP_IOCTL_DSP_LOAD32: | |
| 73 | return snd_hwdep_dsp_load_compat(hw, argp); | |
| 74 | } | |
| 75 | if (hw->ops.ioctl_compat) | |
| 76 | return hw->ops.ioctl_compat(hw, file, cmd, arg); | |
| 77 | return -ENOIOCTLCMD; | |
| 78 | } |